Stoker.



No. 820,184. PATENTED MAY 8, 1906.

P. J. DUFFY. STOKER.

APPLICATION FILED APR. 20. 1905.

2 SHBETSSHEET l.

PATRICK J. DUFFY, OF FREEDOM, PENNSYLVANIA.

STOKER i Specification of Letters Paten Patented May 8, 1906:

Application filed r m 20, 1905. Serial No. 256,649.-

To all whom it may concern.-

- Be it known that I, PATRICK J. DUFFY, a citizen, of the United States,

Freedom, in the county of Beaver and State residing at.

of Pennsylvania, have invented certain new and useful Improvements in Stokers', of

which the following is a specification, refertive-boiler.

' Figure 1 re ence being had therein to the accompanying drawings, forming part of this specification,

resents the longitudinal sectional view 0 portions of the locomotiveboiler and tender provided with my improved stoking apparatus. Fig. 2 is a plan view of the parts shown in Fig. 1. Fig. 3.is a vertical sectional viewindicated by the line III'IIIof Fig. 1. Fig. 4 is a similar section on the line IV IV. of Fig. 1, showing the de-' fleeting-points. Fig-5 is a perspective view of the scoop detached and portions of its supporting-rails. 1

My invention refers to improvements in apparatus for charging co al into a furnace, and

is particularly ,adapted and'designed for incorporation-with the fire-box of a locomo- The. invention is designed to provide means for receivmg the coal from the hopper or bunker of the tender and for projecting it into. the furnace, either-directly or at different an les, so as "to distribute the coal evenly for "inc'losing the operativefurnace-chamber over t e grate-bars, means being provided prevent entrance of cold air, together with means for automatically opening and closing the rear end of the scoop, meansfor actuating the scoop by meansunder control of the fireman, toget er with "other features of con- 'struction and operation, as shall be more fully hereinafter set forth.

Referring nowto the drawings, Zis the of the boiler, having the usual door-opening 3, while 4 is the coalbunker of thetenderconnected with the lo- .w'ardly and comotive by the usual coupling and provided with-a front closing-wall 5 of any suitable construction. 6 6 represent railsof a track leading from the bottom of the coal-bunker forwardly and upwardly, terminating immediately 7 The scoop is actuated forbackwardly by means of a hollow; swinging bar or arm 8, pivoted at '9 in a suitable supporting-frame 10 and provided with a telescoping extension 11, having tering e scoop pivoted to mechanism to the trackand' in back of the furnace-door opening, upon which track is slidingly mounted a shift minals 12, pivotally connected to the scoop at each side, as clearly shown. The extension 11 may be normally pressed downwardl by an interior spring, if desired, althoug ordinarily the weight of the scoop and itsattached mechanism will be sufiicient to hold it downwardly in place. The scoop.

is provided with a rear door 118, pivoted at the lower back edge at 14, the back portion of the scoop preferably sloping upwardly and backwardly, as shown,

the back 13 -will fall by 'gravity, or, if'pre ferred, a pressure-spring may be employed for the same purpose. The track-rails 6 are so that when released 4 turned upwardly at the back, as shown at 15,-

so that when the scoop is thrown backwardly, as indicated in dotted lines in Fig, 1, the endgate 13 will be thrown upwardly intopo'sition by contact with the upwardly-turned rail extremities, and for the purpose-of holding the gate closed I have provided a latch 16,-hav ing a hooked extremity 17, adapted to engage over the upper edge of the end-gate 13 at one side, as shown in Fig. 5. Latch 16 is the side of the scoop conveniently upon one of the pivoting-pins attaching the extremities 12, as shown, and is provided with an upwardly-extending tripping-arm 18.

Pivoted at'19 is a tripping-latch, the one arm 20 of which extends downwardly into the path of arm 18, the la'tch havin a backwardly-extending bearing lug 21, adapted to rigidly hold the arm .20 against movement backwardly, but to permit it to freely move forwardly, as indicated in dotted lines in Fig. 1, arm 20 normally depending by gravity in the position shown in full lines. By

-this device, in the forward travel of the scoop 7 its holding-arm lfi'passes freely under latchv 20 without being affected, retaining the endgate closed until the scoop has arrived at the limit of its forward travel the'coal into the furnace. Upon the back travel of the scoop, however, the arm 20, engaging arm 18, raises latch 16, releasingthe endgate,, which then falls downwardly upon the backward movement of the scoop will slide underneath the coal dis-' tributed downwardly into the path of the scoop from the hopper 4, being automatically and has delivered closed again by coming into contact with the curved terminals 15.. v I

For the purpose of deflectin the scoop to the right or the left I have provi ed the construction shown in Fig. 4, consisting of shiftingarms 22, pivoted at 23, and provided with up,

per iinvardly-extending terminals 24, adapt- I regulated by the operator, so as to deliver the ed to engage one or the other of the side edges at the front of the scoop and to suddenly turn it sidewise as the coal is delivered into .the furnace.

The terminals 24 are capable of lateral ad ustment to either side simulta' neously, so that but one of them will engage or left side, while in the intermediate position the one edge of the scoop either at the right the points 24 are so arranged that the scoop will pass inwardly without interference and will deliver the coal" directly into the furnace in. a direotionlongitudinal of the furnace.

' The deflecting-points are set to the desired I by link 26, which may engage both arms osition by an operating-lever 25,.connected 22 or they may be connected by a supplemental link 27, as shown. a

For the urpos'e of completely inclosing the trackway or the scoop and of preventing as far as possible entrance of air into the fur-' nace-, as well as to confine and protect the apv paratus, I have inclos'ed the trackway in a box-like conduit consisting of a floor 23, having upwardly-extending sides29 30 and a top 31, provided with a longitudinal slbt '31, through which the extension 11 extends, theslot being of sufiicient-length to permit of the full range movement. A sliding cover-plate 33 is preferably employed, connected with extension 11 and adapted to cover the slot during forward and back travelof the apparatus. The back portion of the conduit is provided with a hopper 32, into which the coal is delivered by gravity from bunker 4, and as thus constructed it will be. seen that as the scoop 7 is thrown back it will receive a charge of coal and as thrown forward'it will deliver it into the furnace-chamber, the extension 11 coming into-abutting contact with the end of'the slot 31, or'with a reinforcednterfering-abutment 34, or with any other sui t-' able device adapted to suddenly-check the travel, so as to facilitate the discharge of the contents. p

- For the purpose of actuating the swinging frame and scoop I have provideda st'eamcylinder 35, preferably mounted on trunnion- I piston having'an outwardly extending rod 43,

engaging arm 44 of the top cross-arm 45 of swinging frame 8, said cross-arm being pivotally mounted in suitable brackets 10, as shown. By this construction, pressure being applied to one end or other of the'cylinder, the frame may e thrownforwardly or back, as desired, and the speed or amount of force of its travel may be delicately varied or coal either to the far side of the furnacechamber or immediately in front or at any intermediate point, while the engagement of the coal by the lowered end-gate of the scoop, depending upon the amount or quality of the coal in the conduit, may bealso regulated by.

valve manipulation; I

For the purpose of examining the interior of the conduit, if desired for any reason, or for introducing a fning-bar into the furnacechamber one side of the scoop-conduit, as the side 30, may be hinged, as indicated at 46,

whereby it may purpose.

x The operation of the device will be readily understood from the foregoing description, and while it is particularly adapted to incorporation with 'locomotive-boilers I .do not .wish o confine it thereto, but to adapt it where desirable to' stationary furnace conbe thrown upwardly for such structions.

claim is I 1. A fuel-supply apparatus for furnaces conslstmg of a downwardly-depending swinging frame provided with a telescopmg extension,

a scoop connected with said extension, a

guiding-track for the scoop, and means for actuating the swinging frame, substantially" as set forth. v

2. A fuel-supply apparatus for furnaces consisting of a downwardly depending swinging frame provided with a telescoping extension, a scoop connected with said extension having a hinged end-gate, a guiding-track for the scoop, and means for actuating the swinging frame, substantially as set'forth.

3. In a fuel-feeding apparatus, a reci orocating scoop provided with a hinged en..-gate, a locking-latch for the end-gate, means for automatically detaching said latch, bearing-tracks having upwardly-turned extremlties ada'pted to engage and close the gate, and means for propelling the I scoop forwardly and backwardly, substantially as set forth.

4. In a fuel-feeding apparatus, a reciprocating scoop provided with a hinged endate, a

locking-latch for the end-gate, means or automatically detaching said latch, bearingtracks having upwardly-turned extremities adapted to engage and close the-gate, meansfor propelling the scoop forwardly and backwardly, and an inclosing conduit surrounding the trackway and scoop, said conduit having a coal-receiving opening, substantially as set forth.

Having described my invention, what I 5. In a fuel-feeding apparatus, arec'iprocating scoop provided with a hinged endate, a locking-latch for the end-gate, means or antomatically detaching said latch, bearing tracks having upwardly-turned extremities adapted to engage and close the gateymeans I for propelling the scoop forwardly andb'aokwardly, and an inclosing conduit surroundnation with scoop-supporting with .a telescoping extension and ti ally 'fiecting devices adapted to engage one or the other edge ing scoop mounted therein upon said tracks ing the trackway and scoop, said conduit having a coal-receiving opening, the top of said conduit also having a clearance-slot for a por tion of the actuating mechanism, substanas set forth. Ina fuel-feeding apparatus, the combitracks, a downwardly-depending swinging frame provided a coal-scoop connected with said extension; of a cylinder having a piston connected with said frame, supply and exhaust connections for said cylindoor adapted to make contactwith said track extremities, a shifting-frame having a portion extending into the said conduit and. engaging the scoop, a steam-cylinderand a piston connected with said .frame, and valve mechanism for controlling the supply thereto, substantially as set forth. v ,-10. In an apparatus of the class described, 'der, and a controlling-valve,substantially as the combination with a furnace-chamber, of set 'forth. inclined tracks leading thereto provided'wit'h 7. Thecombination with a furnace, tracks upwardly-turned back extremities in, the leading thereto, a coal-delivery scoop, and path of the closing door of the scoop, an inoperating means therefor; of interfering declosing conduit having a receiving-opening, a

traveling scoop mounted therein upon sai vices adapted to en age one or the other edge of the scoop to de ect it tOOIIGSldGDI'thQ tracks and provided with an opening and other, substantially as set forth. closing door adapted to make contact with 8. In a fuel-feeding, apparatus, the combi said track extremities, a shifting-frame havnation with a swingingframe having a teleing a portion extending'into the said conduit scoping extension, a coal-scoopactuated, and engaging the scoop, a steam-cylinder and thereby, means for actuating the frame, and a piston connected with said frame, valve a trackway for the scoop; of adjustable de' mechanism for controlling the supply thereto, and means for deflecting the scoop to the right or left respectively, substantially as set forth.

In testimony whereof I afiiX my signature in presence of two witnesses. I

PATRICK J. DUFFY.

of the scoop to deflect itto one side or the other or to be located in an inoperative position to provide for delivery directly in line with the trackway, substan-' tially as. set forth.

9. In an apparatus of the class described the combination with a furnace-chamber, of Witnesses: inclined tracks leading thereto provided with JOSEPH GLADDEN, upwardly-turnedback extremitiesin the path FREDERICK G. DUERIL,

and providedwith an openlng and Closing 

